TLC59461 Datasheet, PDF (20/33 Pages) Texas Instruments – 16-Channel, 12-Bit PWM LED Driver with 6-Bit Dot Correction

TLC59461
SLVS896A – NOVEMBER 2008 – REVISED MARCH 2009............................................................................................................................................... www.ti.com
SERIAL INTERFACE
The TLC59461 has a flexible serial interface that can be connected to microcontrollers or digital signal
processors in various ways. Only three pins are needed to input data into the device. More than two TLC59461s
can be connected in series by connecting an SOUT pin from one device to the SIN pin of the next device.
Cascaded two TLC59461s are shown in Figure 29 and Figure 30. The SOUT pin can also be connected to the
controller to receive status information from the TLC59461; see the SCLK and GSCLK Frequency section.
TLC59461 (a)
TLC59461 (b)
SIN(a)
SIN
SOUT
SIN
SOUT
SOUT(b)
SCLK, XLAT,
BLANK, GSCLK,
MODE
Figure 29. Cascading Two TLC59461 Devices
MODE
XLAT
SIN(a) ^DCb
DCa
MSB
LSB
GSb1
MSB
SCLK
1
SOUT(b)
192
DCb
¾
MSB
1
¾
¾
GSa1
LSB
384
GSb1
MSB
GSb2
MSB
1
SIDb1 SIDb1
MSB MSB-1
GSa2
LSB
384
SIDa1
LSB
GSb3
MSB
1
SIDb2 SIDb2
MSB MSB-1
BLANK
GSCLK
1
1
4096
OUT0/4/8/12
(Voltage)
OUT1/5/9/13
(Voltage)
OFF
ON
OUT2/6/10/14
(Voltage)
OUT3/7/11/15
(Voltage)
Figure 30. Timing Diagram of Two Cascaded TLC59461 Devices (XHALF = High)
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